[单选题]
If the scattering angle in Comp9 9k1sf/( it if h:emqngza*r*ton's scattering is 90e. What is the wavel+c3 wcr ;jnw3 0yhit4n5zjpz7ength sh 3pz jwy0 3zj+in45cw;hr7tncift?
A. $1.22 \times 10^{-12} \; m$
B. $2.43 \times 10^{-12} \; m$
C. $3.65 \times 10^{-12} \; m$
D. $4.85 \times 10^{-12} \; m$
Post time 2024-1-22 00:41:22